520 Motorcycle roller chain

Product basic information description

Place of Origin:Zhejiang, China

Supplier: Taiwanese supplier.

Brand Name: RAS, SSS, RS, JPM

Model Number: 520 

Material: 40Mn 

Color: Gold,Green,Red,Yellow,Black,White

Quality System: ISO9001:2015

Market: All over the World

OEM: Available

The raw materials

1. Adopt the high quality alloy steel produced by regular electric furnace in large factory to avoid the defects such as loose material production and inclusion.

2. After four to five times of precision cold rolling with steel strip, the internal structure flow is linearly distributed and the grains are more meticulous and even, avoiding the occurrence of defects such as intergranular cracks.

3. Pin shaft material adopts high quality 30CrMnTi. The roundness and diameter divergence of raw materials in the direction of length can reach within 0.01

Manufacturing process

1. Chain plate punching

Taiwan precision continuous punching die is adopted, all secondary punching or extrusion is applied to ensure the bright belt of chain plate hole reaches 80%~90%, to ensure the matching firmness between pin shaft and outer chain plate, chain sleeve and inner chain plate to the maximum extent, to reduce the initial elongation of the chain and increase the fatigue strength of the chain.

2. The chain set

It is made of high quality alloy steel by the chain coil machine produced in Taiwan, the wall thickness of the chain sleeve is even, and the roundness of the inside and outside diameter can reach more than 99%.

3. Heat treatment

Chain plate: medium carbon alloy steel is hardened and tempered to obtain uniform and fine tempered Soxhlet structure, which can improve the tensile strength and fatigue strength to the maximum extent

Pin shaft, roller and chain sleeve adopt carbonitriding technology to make the surface of parts reach high hardness and wear resistance.High internal structure strength and good toughness.

4. The assembly

The company's independent research and development of production machines, the world's most advanced production line, the production line automatic continuous assembly, riveting, pre-drawn oil, cut off, high system efficiency and low cost.Features: straight chain frame, no distortion.

5. The chain before the factory 100% through manual inspection, to ensure the qualified rate of factory products, in the attitude of responsibility for users, further implement the quality policy of "quality is life, trademark is responsibility"

http://www.raschain.com/